The interaction of relativistic charged-particle beams with interstellar clouds

Rose, William K.; Guillory, J.; Beall, J. H.; Kainer, S.

doi:10.1086/162025

Cited by 32 publications

(35 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The jet can apparently also excavate large regions, as is suggested by the complex structures in, for example, 3C120. The physical processes which can accelerate and entrain the ambient medium through which the jet propagates have been discussed in detail in several venues (see, e.g., Rose et al, 1984, Beall, 1990, Beall et al, 2003, and Beall, 2010. It is also possible given analysies by Kundt and Gopal-Krishna (2004) and subsequent simulations, that the jets can consist of electronpositron pairs.…”

Section: Discussionmentioning

confidence: 99%

A Review of Astrophysical Jets

Beall¹

2018

Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017)

View full text Add to dashboard Cite

This review continues a series that considers our evolving understanding of the nature of astrophysical jets. These have been defined as linear structures on the sky, typically bi-polar, and originating from a common source. Ironically, the original modeling consisted of analytically solveable estimates of radiation processes based on spherical symmetry. We now know that jets are associated with outflows originating from accretion processes in star-forming regions, compact objects (such as neutron stars and black holes), γ-ray bursts associated with stellar collapse, active galactic nuclei, and in some pulsars. In pulsars, the jet production can be drawn from angular momentum loss from the pular. In accreting systems, the jet production seems to be entangled intimately with processes in the accretion disks around the compact objects. The jets can be extremely powerful in terms both of their kinetic luminosity and radiative signatures, and often emit radiation over the entire electromagnetic spectrum, from radio to γ-rays. Astrophysical jets often appear to be one-sided and Doppler boosted. This phenomenon is usually interpreted as evidence of bulk relativistic motion of the emitting particles. In the last three decades and more and as a result of observing campaigns using detectors sensitive from radio to γ-ray energies, theoretical models of these sources have become richer and more complex. As noted above, models have moved from assumptions of isotropy that made analytic calculations possible, to fully anisotropic models of emission from the jets and their interactions with the interstellar and intra-cluster medium. Such anisotropic calculations are only possible because we now have extensive computational resources that can solver the rather complex emission models that result from such anisotropies. In addition, the degree of international cooperation required for observing campaigns of these sorts is remarkable, since the instruments include among others the Very Large Array (VLA), the Very Long Baseline Array (VLBA), the millimeter wave interferometeter network, and entire constellations of satellite instruments, often working in concert. This last point is critically important. The increased resolution of observational systems has taken us from degrees to arcminutes to arcseconds to milliarcseconds, and now to microarcseconds in certain instances. The milliarscecond and microarcsecond observations have shown us the truly dynamic nature of the emitting regions of these remarkable objects. In this paper, I discuss some relevant observations from these efforts and the theoretical interpretations they have occasioned.

show abstract

Section: Discussionmentioning

confidence: 99%

A Review of Astrophysical Jets

Beall¹

2018

Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017)

View full text Add to dashboard Cite

show abstract

“…The jet can apparently also excavate large regions, as is suggested by the complex structures in, for example, 3C120. The physical processes which can accelerate and entrain the ambient medium through which the jet propagates, have been discussed in detail in several venues (see, e.g., Rose et al, 1984, Beall, 1990, Beall et al, 2003, and Beall, 2010.…”

Section: Discussionmentioning

confidence: 99%

A Review of Astrophysical Jets

Beall¹

2016

Proceedings of XI Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF15)

View full text Add to dashboard Cite

This review considers the nature of astrophysical jets, defined as linear structures on the sky, typically bi-polar, and originating from a common source. These jets are typically associated with outflows originating from accretion processes in star-forming regions, compact objects (such as neutron stars and black holes), γ-ray bursts associated with stellar collapse, active galactic nuclei, and in some pulsars. In pulsars, the jet production can be drawn from angular momentum loss from the pular. The jets can be extremely powerful in terms both of their kinetic luminosity and radiative signatures, and often emit radiation over the entire electromagnetic spectrum, from radio to γ-rays. Astrophysical jets often appear to be one-sided and Doppler boosted. This phenomenon is usually interpreted as evidence of bulk relativistic motion of the emitting particles. In the last three decades and more and as a result of observing campaigns using detectors sensitive from radio to γ-ray energies, theoretical models of these sources have become richer and more complex. They have moved from assumptions of isotropy that made analytic calculations possible, to fully anisotropic models of emission from the jets and their interactions with the interstellar and intra-cluster medium. Such anisotropic calculations are only possible because we now have extensive computational resources. In addition, the degree of international cooperation required for observing campaigns of these sorts is remarkable, since the instruments include among others the Very Large Array (VLA), the Very Long Baseline Array (VLBA), and entire constellations of satellite instruments, often working in concert. In this paper, I discuss some relevant observations from these efforts and the theoretical interpretations they have occasioned.

show abstract

“…20 The consequences of a relativistic electron beam passing through a denser, nonrelativistic plasma were discussed and various plasma wave mechanisms for coupling energy from the beam to the background plasma were considered so as to establish a nonthermal dissipative quasisteady state of the beam-penetrated plasma. 21,22 This dynamical picture is fundamentally different from the MHD description of plasma heating by a penetrating beam. Plasma wave mechanisms under investigation included primary unstable space-charge waves transferring power to nonlinearly induced secondary space charge waves and density fluctuations ͑cavitons͒, and in which nonthermal randomly accelerated plasma electrons created by these nonlinearities provide and represent greatly enhanced Landau damping of the secondary waves.…”

Section: Session IImentioning

confidence: 98%

Miniconference on astrophysical jets

Bellan

2005

Physics of Plasmas

View full text Add to dashboard Cite

This miniconference brought together observers of astrophysical jets, analytic and numerical modelers of both astrophysical jets and spheromaks, and laboratory experimentalists. The purpose of the miniconference was to encourage interaction between these diverse groups and also expose the plasma physics community to the interesting plasma issues associated with astrophysical jets. The miniconference emphasized magnetically driven astrophysical jets and consisted of three half-day sessions. The order of presentation was approximately: observations and general properties, experiments, numerical models, and special topics.

show abstract

The interaction of relativistic charged-particle beams with interstellar clouds

Cited by 32 publications

References 0 publications

A Review of Astrophysical Jets

A Review of Astrophysical Jets

A Review of Astrophysical Jets

Miniconference on astrophysical jets

Contact Info

Product

Resources

About